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软弱围岩隧道所处区域地质条件复杂,隧道开挖过程中地质因素的变化严重影响隧道围岩稳定性。作为一种特殊的地质条件,冲沟的存在对隧道开挖过程中的围岩稳定和施工安全均会产生一定程度的影响。本文以武黄城际铁路沙窝隧道工程为例,详细介绍了城际铁路隧道浅埋偏压软弱围岩段安全通过冲沟的施工方案和关键技术。
The geological conditions in the area where the soft rock tunnel is located are complex, and the change of geological factors during the tunnel excavation seriously affects the stability of the surrounding rock of the tunnel. As a special geological condition, the existence of gully will affect the stability of surrounding rock and construction safety in tunnel excavation to a certain extent. In this paper, taking Wu Shao Intercity Railway Shawo Tunnel project as an example, the construction scheme and key technologies for safely passing the gully through the soft surrounding rock sections of the shallow buried interbedded railway are introduced in detail.